0x88980406 SyncFlush() …Is there a workaround?

Question

I get this exception in my application. I have found links discussing it on the web but nothing indicating how to track it down and/or workaround it.

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Answer 1

With Microsoft's excellent help, we just solved a SyncFlush problem that has plagued us for more than a year. It turns out that we were creating multimedia timers in native code, but we weren't freeing them every time. More specifically, we called timeBeginPeriod and timeEndPeriod, but we called begin more times than end, thus creating a resource leak. The WPF rendering thread needs to use those timers, but we exhausted a limited supply of them (perhaps 65k). The result was that the rendering thread stopped rendering and either hung or caused a crash. Watch out for timers!